查询词典 variable density system

This will limit the operating range of the generators. Hence, this proposal aims to develop an innovative 「dual variable configuration」 generator which can be applied to wind power system. The feature of the proposed generator is such that its windings and air gap are regulable so that the characteristics can be regulated to cope with variable rotational speed operations and different turbine designs with a control algorithm applied.

因此，本计画旨在研发一创新双重变结构之发电机，并应用於风力发电系统，其特色为利用两种发电机变结构设计-亦即「绕组切换」与「调整气隙」，结合控制法则以即时调整发电机特性，使其适用於各种叶片设计以及各种转速下之操作，并使发电机输出得以始终运作於最大功率点。

The thesis studies the necessity and rationality of using the technology of variable frequency drive to resolve the bottleneck in SPCP s driving system, and describes the hardware developing process of sample of the variable frequency drive .

本文主要论述了，在潜油螺杆泵采油系统中应用变频驱动技术来解决这一问题的必要性和合理性，并详述了试验样机的硬件开发过程。

To bias flywheel system, based on variable structure control theory, an uncoupled variable structure control law is?developed. Control law stability and robustness are analyzed at the same time.

对于许多应用卫星来说，由于天线、太阳帆板的影响，挠性干扰是个不可避免的问题，本文从工程的角度分析和仿真了带有挠性附件卫星的控制方法。

The variable structure gain is tuned by the fuzzy logic. The designed controller exploits the advantages of CMAC neural network, variable structure control and fuzzy control theory to improve the performance of the system.

利用自适应技术估计了估计误差的大小，减小了系统的不确定性，并利用模糊控制技术调整了变结构增益，改善了系统的性能。

In this article,the writer in combination with the character of variable velocity variable frequency analyzed the principles of transmission system and the request of adjusting velocity in filament yarn twisting machine .

文章分析了弹力丝机传动系统和调速要求，结合变频调速技术的特点，选用艾默生变频器实现调速，简化了传动结构。

Based on the developed variable polarity TIG welding power supply ,it establishes variable polarity TIG welding arc multi-information measuring and processing system by adopting memory oscilloscope,high speed video-recorder?spectrograph?welding arc dynamic analyzer and computer.

以研制的变极性TIG 焊接电源为实验平台，采用记忆示波器、高速摄像仪、光谱分析仪、焊接电弧动态分析仪，建立起变极性TIG焊接电弧多信息测试分析系统，同时采集焊接电流、电弧电压、电弧形态和电弧光谱等重要信息，并基于VisualC++语言开发的软件系统对采集的各种信息进行融合及分析。

Forest ecological benefits index system can divided into two kind from the conception of forest ecological benefits measuration, such as dependent variable of region and stand, independent variable.

本文从森林生态效益计量角度出发，阐述了森林生态效益的定义，指出它与森林资源的相关为第二类相关，并将森林的生态效益的指标体系划分为自变量（区域自变量和林分自变量）和因变量两类。

Experiments were applied with variable numbers of joined federates and variable length of time advancing step. Major factors that affecting time advancing efficiency of HLA compatible distributed simulation system was concluded based on the comparison and analysis of the experiment results.

通过不同盟员个数和不同仿真推进时间步长下系统推进效率的实验分析，得出限制仿真系统推进效率的主要因素，并结合航天任务物理模型的特点，设计了一种改进的组件交互方案。

To overcome disturbance problem of hedgehopping over the sea, variable structure method is proposed. The central content in this paper is the design of missile altitude control system with variable structure. The research has practical meaning.

不同的干扰因素对导弹高度控制系统的要求是矛盾的，而利用PID控制并不能解决这一矛盾，为此提出了采用变结构高度控制的方法。

It's an effective measure of fast valving in improving the dynamic stabilities of power system and preventing the overspeed of steam turbines, but the fast valving technique available can satisfy the need of modern steam turbines no more. On the basis of the new type fluid logic valve, which combines the regulating systems and safety systems happily, the steam turbine EHC based on new principle is put forward, one of its outstanding characteritics is, the fast valving is operating in a closed control loop. For the implementation of control for steam generator regulation and safety systems with nonlinear mult-operating modes, a new methodology for designing a fuzzy logic controller is proposed, which is based on the combination of"error phase plane"and"variable universe of discourse". Application of a double-mode FLC with the new methodology is presented, the validity of the design methodolody is desmonstrated by test; A new methodolody is also presented to improve the design and tuning of a FLC using variable structure control theory.

本文还详细讨论了快关控制在提高电力系统暂态稳定性及超速保护中的应用，分析了现有的快关控制规律的局限性，研究出一种基于新型快关阀的汽轮机电液控制系统，其突出特点是使汽轮机闭环快关成为现实，指出这种基于新的组成原理与设计方法的汽轮机电液控制系统对不同工况下的适应能力；针对汽轮发电机组多工况、非线性的特点，提出一种把&误差相平面&方法与&可变论域&思想有机结合的双模FLC设计与调整的新方法，试验结果表明该系统具有良好的动、静态特性；为改善FLC控制规则的设计与调整，作者还介绍了一种把滑模变结构理论成功应用于模糊系统设计的新方法。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。